What is the solution of the system of equations?

y = 3x + 7

y = x - 9

hope you understand this my special keyboard accomodation is bugging out

Step-by-step explanation:

We can substitute

y

=

x

-9

in the first equation to get the value of

x

We get

x

-

9

=

3

x

+

7

Transposing

3

x

to the left hand side and

-

9

to the right hand side, we get

x

-

3

x

=

7

+

9

-

2

x

=

16

Dividing both sides by

-

2

, we get

-

2

x

-

2

=

16

-

2

x

=

-

8

Substituting

x

=

-

8

in the second equation, we get

y

=

-

8

-

9

y

=

-

17